<template>
  <div :class="className" :style="{height:height,width:width}" />
</template>

<script>
import * as echarts from 'echarts'
import resize from './utils/resize.js'
require('echarts/theme/macarons')

export default {
  mixins: [resize],
  props: {
    className: {
      type: String,
      default: 'chart'
    },
    width: {
      type: String,
      default: '100%'
    },
    height: {
      type: String,
      default: '300px'
    },
    PieChartData: {
      type: Array
    }
  },
  data () {
    return {
      chart: null,

      /**
       * 将传递过来的PieChartData的value和name属性分别抽出来形成两个数组
       */
      PieChartDataValue: [],
      PieChartDataName: []
    }
  },
  watch: {
    PieChartData: {
      deep: true,
      handler (val) {
        this.PieChartData.forEach(item => {
          this.PieChartDataValue.push(item.value)
          this.PieChartDataName.push(item.name)
        })
        console.log(this.PieChartDataValue)
        console.log(this.PieChartDataName)
      },
      immediate: true
    }
  },
  mounted () {
    this.$nextTick(() => {
      this.initChart()
    })
  },
  beforeDestroy () {
    if (!this.chart) {
      return
    }
    this.chart.dispose()
    this.chart = null
  },
  methods: {
    initChart () {
      this.chart = echarts.init(this.$el, 'macarons')

      this.chart.setOption({
        tooltip: {
          trigger: 'item',
          formatter: '{a} <br/>{b} : {c} ({d}%)'
        },
        legend: {
          left: 'center',
          bottom: '10',
          //   data: ['Industries', 'Technology', 'Forex', 'Gold', 'Forecasts']
          data: this.PieChartDataName // 在这里使用PieChartDataName渲染pie图底部
        },
        series: [
          {
            // 在这里写鼠标放上去的提示框的title
            name: 'WEEKLY WRITE ARTICLES',
            type: 'pie',
            roseType: 'radius',
            radius: [15, 95],
            center: ['50%', '40%'],
            // data: [
            //   { value: 320, name: 'Industries' },
            //   { value: 240, name: 'Technology' },
            //   { value: 149, name: 'Forex' },
            //   { value: 100, name: 'Gold' },
            //   { value: 59, name: 'Forecasts' }
            // ],
            data: this.PieChartData,
            animationEasing: 'cubicInOut',
            animationDuration: 2600
          }
        ]
      })
    }
  }
}
</script>
